Method for extracting industrial hemp oil rich in cannabidiol

[0016] Example 1:

[0017] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven and dried at 50°C for 12 hours; then the pre-dried hemp Put the industrial hemp into the pulverizer and crush it into 20-mesh industrial hemp powder, put the industrial hemp powder in the oven, and dry it at 50°C for 12 hours; the dried industrial hemp powder remains in the drying furnace to naturally Cool to normal temperature; Weigh 132.0g of industrial hemp powder after cooling and put it into the material bucket of the extraction kettle, and CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 60°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 200kg/h, and the extraction time is 1.5h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp powder is dissolved in supercritical CO 2 In the fluid, the CO of the industrial hemp oil rich in cannabidiol is then 2 The fluid is throttled and expanded from the extraction kettle to the separation kettle for analysis, and 6.49g of industrial hemp oil rich in cannabidiol is obtained, with an oil yield of 4.92%. Finally, the resolved industrial hemp oil rich in cannabidiol is quickly put into a homogenizer after being heated at 80°C, filled after homogenization, and stored in a dark place and refrigerated.

[0018] Example 2:

[0019] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven, and the industrial hemp is dried at 55°C for 11 hours, and then the pre-dried The industrial hemp powder is put into the pulverizer and crushed into 30-mesh industrial hemp powder, then the industrial hemp powder is put into the oven, and the industrial hemp powder is dried at 55°C for 11 hours; the dried industrial hemp powder remains in the oven. Naturally cool to normal temperature in a dry furnace; weigh 131.0 g of cooled industrial hemp powder and put it into the material barrel of the extraction kettle, and put CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 55°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 180kg/h, and the extraction time is 1.5h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp powder is dissolved in supercritical CO 2 In the fluid, the CO of the industrial hemp oil rich in cannabidiol is then 2 The fluid is throttled and expanded from the extraction kettle to the separation kettle for analysis, and 5.92g of industrial hemp oil rich in cannabidiol is obtained, and the oil yield is 4.52%. Finally, the resolved industrial hemp oil rich in cannabidiol was quickly put into a homogenizer after being heated at 75°C, filled after homogenization, and stored in a dark place and refrigerated.

[0020] Example 3:

[0021] When extracting industrial hemp oil rich in cannabidiol, the screened industrial hemp (including leaves, stems and seeds) is first put into an oven, and the industrial hemp is dried at 60°C for 10 hours, and then the pre-dried Put the industrial hemp into the pulverizer and crush it into 40-mesh industrial hemp powder; then put the industrial hemp powder in the oven and dry it at 60°C for 10 hours, and the dried industrial hemp powder remains in the drying furnace Naturally cool to normal temperature; Weigh 130.0g of cooled industrial hemp powder and put it into the material barrel of the extraction kettle, and put CO 2 The gas is injected into the extraction kettle for extraction, the extraction temperature is 50°C, and the pressure is 30MPa; CO 2 The flow rate of the gas through the extraction kettle is 150kg/h, and the extraction time is 2h, so that the industrial hemp oil rich in cannabidiol in the industrial hemp powder is dissolved in supercritical CO 2 In the fluid, the CO of the industrial hemp oil rich in cannabidiol is then 2 Fluid from the extraction tank is throttled and expanded to the separation tank for analysis, and 5.46g of industrial hemp oil rich in cannabidiol is obtained, with an oil yield of 4.2%. Finally, the resolved industrial hemp oil rich in cannabidiol was quickly put into a homogenizer after being heated at 80°C, filled after homogenization, and stored in a dark place and refrigerated.

[0022] The result of above-mentioned embodiment is as follows:

[0023] serial number Extraction pressure/MPa Extraction temperature/℃ Extraction time/h raw material/g Extract/g Oil yield/% 1 30 60 1.5 132.0 6.49 4.92 2 30 55 1.5 131.0 5.92 4.52 3 30 50 2 130.0 5.46 4.20